Troubleshooting english 08.10.09

Technical
Manual
Band Saw Guide
Band sawing
Feed
The feed rate decribes the depth the tooth is penetrating the material in a
certain time.
In order to cut cost-efficient you want to
run the highest feed rate on your
machine. The feed rate however is
restricted by the machinability of the
workpiece and the life time of the blade.
A higher feed rate results in smaller
cutting angles. The cutting is faster but
the blade life is significantly lower. A
smaller feed rate creates higher cutting angles but increases the cutting
time. So how you know that you uses the right feed rate? Check the
chips and assess the form and colour (see also blade speed).
The lubrication is important for a long blade life and a cost-efficient
cutting process. Using the lubrication correctly
you can reduce thermical stress and create a
better chip flow over the tooth face. Without
lubrication you can get excessive heat caused
by friction which results in built-up edges. The
effect reduces the cutting performance and the
energy consumption increases which could
cause tooth stripping. Follow the
manufacturer’s instructions regarding the right
ratio of the lubrication. Keep a stock of correctly mixed lubrication. Don’t
refill your machine only with water because you will lose the lubrication
with results in premature dulling of the teeth. Use a refractometer to
check the ratio. Check all outlets of the lubrication system to make sure
that all necessary parts will be lubricated.
Optimum feed
>>>
curled and silver chips
Feed too low
>>>
very thin chips
Feed too high
>>>
blue and heavy chips
Band sawing
Speed
Blade speed or speed defines how fast the blade is running through the
material. A higher blade speed results in higher cutting angles and
increases therefore the cutting performance.
The speed is restricted by the machinability of the material and the heat
created during cutting. Cutting with high blade speed in hard material can
cause excessive heat resulting in low blade life.
Higher blade speed
Lower blade speed
How we know whether we are cutting with the correct speed?
Look at the chips and check colour and form. Our aim is to get chips,
which are thin, tight rolled and if touched warm. A change in colour from
silver to slightly blue means excessive heat and probable a too high
speed. Blue chips show a too high temperature resulting in low blade life.
Band sawing
Terminology band sawing
Break-in of the blade:
(rounding of the tooth tips):
The correct speed and feed values (see table) should be reduced
by
50% (feed,)
30% (speed).
After cutting about 500 cm² you should increase both values
carefully too 100%.
Chip load
The following values are good up to 500 mm workpiece diameter
Chip load per tooth (mm)
Low alloyed steel ..........
0,005 - 0,008
Alloyed steel .................... 0,004 - 0,008
Tool steel ....................
0,002 - 0,005
Stainless steel ................... 0,002 - 0,005
Brass/Copper ................... 0,008 - 0,012
Aluminium ........................... 0,010 - 0,030
Fz =
_______H_______
= chip load per tooth
40 x speed x t x TPI
H
t
TPI
=
=
=
height of workpiece
cutting time per section
tooth pitch (Combi tooth 3/4 = 3,5)
Band sawing
Tips
Tooth Pitches = TPI
• The highest workpiece diameter determines the tooth pitch.
• If you cut in layers or bundles, you have to add the diameters.
• The form of the workpiece, the clamping and the band saw
machine have to be considered.
If you cut thin-walled tube on light-duty machine in layers, add the
wall- thicknesses.
See also table tooth pitch selection.
Band sawing
Tips
The capacity of the gullet has
an important influence on the
cutting performance. If the
tooth takes a chips during
cutting, the chip is rolled and
falls out of the gullet after
leaving the workpiece.
If you take a heavy chip, the chip
can jam in the gullet and will be
drawn back when entering the
workpiece the next time. Tooth
stripping or crooked cutting are
the result.
Band sawing
Tips
How to consult your customer:
1. Determine the material type and look for correct speed and feed
(see table).
2.
•
•
•
Try to find out what your customer is looking for:
Blade life
Surface finish
Cutting time.
o Please note that it is not possible to achieve all three.
3. Check the condition of the machine:
• Brush
• Guides
4. Check lubrication (oil cotent about 8 – 12%). If cutting stainless
steel or tool steels, you should go up to 15% or higher or using
cutting oil.
5. Break-in the blade except using a coated blade.
6. Choose the correct tooth pitch (see table).
7. Check the chips at the beginning of the cutting process and try to
avoid vibration by adjusting the feed and speed.
8. Make a full documentation for further usage.
Typical defects of
band saw blades
and
probable causes
1. Heavy even wear on tips and corners of teeth
The wear on teeth is smooth across the Tipps and the corners of set teeth have
become rounded.
Probable Cause:
• Improper break-in procedure.
Solution: Break-in of blade for about 500 cm² cutting surface with 70 % of
normal band speed and 50 % of downfeed (please refer to the charts at
the end of this guideline).
• Excessive band speed for the type of material being cut. This generates a high
tooth tip temperature resulting in accelerated tooth wear.
Solution: Consult chart for exact band speed adjustment.
• Low feed rate causes teeth to rub instead of penetrate. This is most common
on work hardened materials such as stainless and tool steels.
Solution: Consult chart for exact feed and speed data. IMPORTANT: Cut
stainless steels always with positive tooth rake angle!
• Hard materials being cut such as "flame cut edge" or abrasive materials such
as "fiber reinforced composites".
• Insufficient sawing fluid due to inadequate supply, improper ratio, and/or
improper application.
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
2. Wear on both sides of teeth
The side of teeth on both sides of band have heavy wear markings.
Probable Cause:
• Broken, worn or missing back-up guides allowing teeth to contact side guides.
Solution: Change guides
• Improper side guides for band width.
Solution: Change guides
• Backing the band out of an incomplete cut..
Solution: Avoid.
3. Wear on one side of teeth
Only one side of teeth has heavy wear markings. Result is a not perpendicular
cut.
Probable Cause:
• Worn wheel flange, allowing side of teeth to contact wheel surface or
improper tracking on flangeless wheel.
Solution: Please adjust back-up guides.
• Loose or improperly positioned side guides.
Solution: Please adjust side guides!
• Blade not perpendicular to cut.
Solution: Please adjust back-up guide.
• Blade rubbing against cut surface on return stroke of machine head.
• The teeth rubbing against a part of machine such as chip brush assembly,
guards etc..
Solution: Please maintain machine!
4. Chipped or broken teeth
A scattered type of tooth breakage on tips and corners of the teeth.
Probable Cause:
• Improper break-in procedure.
Solution: Break-in of blade for about 500 cm² cutting surface with 70 % of
normal band speed and 50 % of downfeed (please refer to the charts at
the end of this guideline).
• Improper blade selection for application.
• Handling damage due to improper opening of folded band.
Solution: Please remove teeth protection only when blade is installed on
machine..
• Improper positioning or clamping of material.
Solution: Please refer to instructions for clamping the material.
• Excessive feeding rate or feed pressure.
Solution: Please refer to cutting parameter table.
• Hitting hard spots or hard scale in material.
5. Discolored Tipps of teeth due to excessive frictional heat
The tooth Tipps show a discolored surface from generating an aexcessive amount
fo frictional heat during use.
Probable Cause:
• Insufficient sawing fluid (inadequate supply, improper ratio and/or improper
application.
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
• Excessive band speed.
Solution: Please refer to parameter table.
• Improper feed rate
Solution: Please refer to parameter table.
• Band installed backwards.
6. Tooth strippage
Section or sections of teeth which broke from the band backing.
Probable Cause:
• Improper of lack of break-in procedure.
Solution: Break-in of blade for about 500 cm² cutting surface with 70 % of
normal band speed and 50 % of downfeed (please refer to the charts at
the end of this guideline).
• Worn, missing or improperly installed chip brush.
Solution: Adjust or change chip brush.
• Excessive feed rate or feed pressure
Solution: Please refer to parameter table.
• Movement or vibration of material being cut.
Solution: Please check clamping unit.
• Improper positioning of material being cut.
Solution: Please check clamping unit.
• Imsufficient sawing fluid
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
• Hard spots in material being cut.
• Improper tooth pitch for cross sectional size of material being cut.
Solution: Please refer to tooth pitch selection table.
• Band speed too slow for grade of material being cut.
Solution: Please refer to parameter table.
7. Chip welded to Tooth Tips
High temperature or pressure generated during the cut bonding the chips to the
tip and face of the teeth. This is a common effect when cutting alumium with
speeds lower than 300 m/min..
Important: When cutting aluminium always work with positive tooth rake angle. 0°
tooth rake angle will most probable cause chip welding.
Probable Cause:
• Insufficient sawing fluid due to inadequate supply, improper ratio and/or
improper application.
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
• Worn, missing or improperly installed chip brush.
Solution: Adjust or change chip brush.
• Improper feeding rate (too high) and/or improper band speed (too low).
Solution: Please refer to parameter table.
8. Gullets Loading up with Material
Gullet area has become filled with material being cut.
Probable Cause (basically as under chip welding):
• Too fine tooth pitch – insufficient gullet capacity.
Solution: Select the right tooth pitch or use tooth pitch selection chart in
Roentgen catalogue.
• Excessive feeding rate creating too large of a chip
Solution: Please refer to parameter table.
• Worn, missing or improperly installed chip brush.
Solution: Adjust or change chip brush.
• Insufficient sawing fluid due to inadequate supply, improper ratio and/or
improper application.
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
9. Heavy Wear on both Sides of Band
Both sides of band have heavy wear pattern. This wear pattern frequently comes
along with a band breakage originating at the wear marks.
Probable Cause:
• Chipped or broken side guides
Solution: Change side guides.
• Side guide adjustment may be too tight.
Solution: Adjust side guides.
• Insufficient flow of sawing fluid through the side guides.
Solution: Maintain machine.
• Insufficient sawing fluid due to inadequate supply, improper ratio and/or
improper application.
Solution: Check oil coolant content with refractometer. Secure sufficient
cooling.
10. Uneven wear or scoring on the sides of band
Wear patterns are near gullet area on one side and near back edge on opposite
side.
Probable Cause:
• Loose side guides.
Solution: Adjust side guides.
• Chipped, worn or defective side guides.
Solution: Change side guides.
• Band is rubbing on part of machine.
Solution: Maintain machine.
• Guide arms are spread to maximum capacity.
Solution: Adjust guide arms always according to material dimension.
• Accumulation of chips in side guides.
Solution: Maintain proper chip removal.
11. Body breakage or cracks from gullets
The origine of the fracture is indicated by a flat area on the fracture surface.
Probable Cause:
• Excessive back-up guide "preload".
Solution: Refer to operators manual or contact machine manufacturer.
• Improper band tension
Solution: The recommended band tension is 300 N/mm². Please use band
tension gauge to adjust.
• The guide arms are spread to maximum capacity.
Solution: Adjust guide arms according to material dimension.
• Improper beam bar alignment
Solution: Contact machine manufacturer.
• Side guide adjustment is too tight.
Solution: Adjust side guides.
• Excessively worn teeth.
Solution: Band was dull and therefore heavy loaded, please change
band.
12. Body Breakage – Fracture traveling in angular direction
The fracture originates in the gullet and immediately travels in an agular direction
into the backing of band.
Probable Cause:
• An excessive twist type of stress existed.
Solution: Contact machine manufacturer.
• Guide arms spread to capacity causing excessive twist from band wheel to
guides.
Solutions: Adjust guide arm spread to work piece dimension. In case the
maximum guide arm capacity has to be used, if possible change to
machine with bigger clamping capacity.
• Guide arm spread too wide while cutting small cross section.
Solution: Adjust guide arm spread according to material dimension.
• Excessive back-up guide "preload".
Solution: Contact machine manufacturer.
13. Body Breakage or Cracks from Back Edge
The fracture originates from the back edge of band. The origin of the fracture is
indicated by a flat area on the fracture surface.
Probable Cause:
• Excessive back-up guide preload will cause back edge to work harden which
results in cracking.
Solution: Adjust pressure block or contact machine manufacturer.
• Excessive feed rate
Solution: Reduce feed rate or pressure or refer to parameter table
• Improper band tracking – back edge rubbing heavy on wheel flange. This
results in a build-up of martensite (very hard layer) which tends to breakage.
Solution: Adjust back-up guides, adjust wheel alignment.
• Worn or defective back-up guides.
Solution: Change back-up guides.
• Improper band tension.
Solution: The recommended band tension is 300 N/mm². Please use band
tension gauge to adjust.
• Notches in back edge from handling damage.
Solution: Please handle blades carefully. Avoid scratching of teeth of
one blade on back edge of another.
14. Heavy wear and/or swaging on back edge
Heavy back edge wear will have a polished appearance or abnormal grooves
worn into surface. Swaging of corners can also occur.
Probable Cause:
• Excessive feed rate
Solution: Refer to parameter tabel.
• Excessive back-up guide "preload".
Solution: Contact machine manufacturer.
• Improper band tracking – back edge rubbing heavy on wheel flange.
Solution: Adjust back-up guides, adjust wheel alignment.
• Worn or defective back-up guides.
Solution: Change back-up guides.
15. Butt weld breakage
Probable Cause:
Any of the factors that cause body breakage can also cause butt weld breaks.
Please note that the weld joint is the weakest part of the blade. Please refer also
to observations no. 11 – 13!
16. Used band is "long" on the tooth edge
"Long" on the tooth edge is a term used to describe the straightness of the band.
The teeth are on the outside of the arc when the strip is lying on a flat surface
Probable Cause:
• Side guides are too tight – rubbing near the gullets.
Solution: Adjust side guides.
• Excessive preload – band riding heavily against back-up guides.
Solution: Refer to operators manual or contact machine manufacturer.
• Worn band wheels causing uneven tension.
Solution: Contact machine manufacturer.
• Guide arms are spread to maximum capacity.
Solution: Adjust guide arms according to material dimension.
• Excessive feed rate.
Solution: Refer to parameter table.
17. Used band is "short" on the tooth edge
Short on the tooth edge is a term used to describe the straightness of the band.
The teeth are on the inside of the arc when the strip is lying on a flat surface.
Probable Cause:
• Side guides are too tight – rubbing near back edge.
Solution: Adjust side guides.
• Worn band wheels causing uneven tension.
Solution: Contact machine manufacturer.
• Guide arms are spread to maximum capacity resp. too far apart for the
workpiece.
Solution: Adjust guide arms according to workpiece dimension.
• Excessive feed rate
Solution: Refer to the parameter table.
18. Band is twisted
Probable Cause
• Excessive band tension
Solution: The recommended band tension is 300 N/mm². Please use band
tension gauge to adjust.
• Any of the band conditions mentioned in # 16 and/or 17.
Solution: See above.
• Cutting a tight radius.
Solution: Refer to table in order to find max. cutting radius for band
width.
19. Broken band shows a twist in band length
Probable Cause:
• Excessive band tension
Solution: The recommended band tension is 300 N/mm². Please use band
tension gauge to adjust.
• Any of the band conditions mentioned in # 16 and/or 17.
Solution: See above.
• Cutting a tight radius.
Solution: Refer to table in order to find max. cutting radius for band
width.
20. Heavy wear in only the smallest gullets
Heavy wear in only the smallest gullets is an indication that there is a lack of gullet
capacity for the chips being produced. Please note that the smallest gullet
determines the capacity of the blade.
Probable Cause:
• Excessive feeding rate.
Solution: Refer to the parameter table.
• Too slow of band speed.
Solution: Refer to the parameter table.
• Too fine tooth pitch for the size of material to be cut.
Solution: Refer to tooth pitch selction table or consult your band saw
blade supplier.
Auf dem Knapp 44
D-42855 Remscheid
Germany
[email protected]
Telefax: +49-(0)2191-373 999
Company Name: _________________________ Date: ____________
Lubrication mixture
Band tension
Band speed/Actual machine setting
Damping rolls - Infeed
Side guides - Infeed
Back-up guides - Infeed
Damping Rolls - Outlet
Side guides - Outlet
Back-up guide - Outlet
Band is rubbing on wheel flange?
Driven wheel runs untrue
Guide wheel runs untrue
Condition/Installation of chip brush
Comments:
NO
NO
NO
Cuttin Parameter
Recommendation
for
Röntgen Band Saw
Blades
Table 1: Cutting Parameter for Bi-Metal Band Saw Blades
Please note that the undernoted recommendation can only give a limited coverage of
cutting parameters. If you do not find your material and/or your band width please
contact Röntgen for further information.
Vc = Band speed in m/min
Vz = Cutting performance in cm2/min
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✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
68
71
68
68
71
71
70
66
68
65
68
70
65
70
68
70
63
48
73
38
35
64
48
52
52
36
36
52
43
43
39
38
41
38
38
41
41
40
36
38
35
38
40
35
40
38
40
33
23
43
16
13
34
23
25
25
14
14
25
18
18
17
40
43
40
40
43
43
42
38
40
37
40
42
37
42
40
42
35
26
45
18
15
36
26
27
27
16
16
27
21
23
19
42
45
42
42
45
45
44
40
42
39
42
44
39
44
42
44
37
28
47
20
17
38
28
29
29
18
18
29
23
23
21
65
68
65
65
68
68
67
63
65
62
65
67
62
67
65
67
60
45
70
35
33
61
45
49
49
33
33
49
41
41
36
41
44
41
41
44
44
43
39
41
38
41
43
38
43
41
43
36
27
46
18
16
37
27
31
31
16
16
31
23
23
19
43
46
43
43
46
46
45
41
43
40
43
45
40
45
43
45
38
29
48
20
18
39
29
33
33
18
18
33
25
25
21
60
63
60
60
63
65
62
58
62
57
60
62
57
62
60
62
55
40
65
30
28
56
42
44
48
28
28
44
36
36
32
38
41
38
38
41
43
40
36
43
35
41
40
35
40
38
40
33
21
49
14
14
43
23
28
32
14
16
31
20
21
17
300 - 500 mm
200 - 250 mm
200 - 400 mm
100 - 150 mm
250 - 350 mm
50 mm
150 - 200 mm
43
46
43
43
46
48
45
41
48
40
46
45
40
45
43
45
38
26
54
19
18
48
28
33
37
17
20
36
25
26
22
41
44
41
41
44
44
43
39
41
38
41
43
38
43
41
43
36
25
46
19
16
37
29
26
28
17
17
28
20
20
20
50 - 100 mm
68
71
68
68
71
71
70
66
68
65
68
70
65
70
68
70
63
48
73
38
35
64
48
52
52
36
36
52
43
43
39
38
41
38
38
41
41
40
36
38
35
38
40
35
40
38
40
33
24
43
17
14
34
24
24
25
15
15
25
19
19
18
200 - 250 mm
Vz
37
40
37
37
40
40
39
35
37
34
37
39
34
39
37
39
32
22
42
15
12
33
22
23
23
13
13
23
17
17
16
100 - 150 mm
Vc Vz Vz Vz Vc Vz Vz Vz Vc Vz Vz Vc Vz Vz Vc Vz
HM-Titan
RP Master
Master
RP
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300 - 500 mm
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✔
27x0,9mm 34x1,1mm 41x1,3mm 54x1,3mm 54x1,6mm
200 - 250 mm
1.0070
St 70-2
1.0301
C 10
1.0303
QST 32-3
1.0401
C 15
1.0501
C 35
1.0503
C45
1.0570
St 52-3
1.0601
C 60
1.1121
Ck 10
1.1133
20 Mn 5
1.1141
Ck 15
1.1158
Ck 25
1.1167
36 Mn 5
1.1186
Ck 40
1.1203
Ck 55
1.1221
Ck 60
1.1223
Cm 60
1.1545
C 105 W 1
1.1730
C 45 W
1.2060
105 Cr 5
1.2080 X 210 Cr 12
1.2162
21 MnCr 5
1.2309 65 MnCrMo 4
1.2312 40 CrMnMoS 8-6
1.2313 21 CrMo 10
1.2314 X 47 CrMo 15
1.2316 X 36 CrMo 17
1.2327 86 CrMoV 7
1.2343 X 38 CrMoV 5-1
1.2352 22 CrMoV 7
1.2363 X 100 CrMoV 5-1
Matrix
Material +
DIN Type
bi-alfa cobalt
Röntgen
41
44
41
41
44
46
43
39
46
38
44
43
38
43
41
43
36
24
52
17
17
46
26
31
35
16
19
34
23
24
20
60 40
63 43
60 40
60 40
63 43
65 45
62 42
58 38
62 45
57 37
60 43
62 42
57 37
62 42
60 40
62 42
55 35
40 23
65 51
30 16
28 15
56 45
42 25
44 30
48 34
28 14
28 17
44 33
36 22
36 23
32 19
300 - 500 mm
✔ ✔
✔ 44 18 20 21 44 19 22 24 41 23 25 36 21 24 36 23
26
✔ ✔
✔ 46 20 22 23 46 21 24 26 45 27 29 40 25 28 40 27
30
✔ ✔
✔ 46 20 22 23 46 21 24 26 45 27 29 40 24 27 40 26
29
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
19
19
11
19
19
15
16
30
25
25
9
12
16
16
14
16
22
22
13
22
22
18
18
32
27
27
11
14
18
18
16
18
24
24
15
24
24
20
20
34
29
29
13
16
20
20
18
20
41
41
30
41
41
37
35
57
49
49
28
33
35
37
33
35
22
16
20
23
16
23
23
23
13
23
23
20
18
36
31
31
13
16
18
20
16
18
24
18
22
25
18
25
25
25
15
25
25
22
20
38
33
33
15
18
20
22
18
20
34
28
32
36
28
36
36
36
28
36
36
32
30
52
44
44
28
32
32
32
28
32
21
14
19
21
14
23
21
21
13
23
21
17
15
37
25
28
13
19
17
17
15
19
24
17
22
24
17
26
✔
26
26
18
28
26
22
20
42
30
33
17
24
22
22
18
24
✔
✔ ✔ ✔ ✔ ✔ 36 13 15 17 36 14 16 18 33 16 18 28 14 17 28 15
18
✔
✔ ✔ ✔ ✔ ✔ 33 10 12 14 33 11 13 15 33 16 18 28 15 18 28 17
20
✔
✔ ✔ ✔ ✔ ✔ 33 10 12 14 33 11 13 15 33 16 18 28 15 18 28 17
20
✔ ✔ ✔ ✔ ✔ 33 10 12 14 33 11 13 15 33 16 18 28 15 18 28 17
✔ ✔ ✔ ✔ ✔ 30 7 9 11 30 8 10 12 30 13 15 25 13 16 25 14
20
17
✔ ✔ ✔ ✔ ✔ 30 7 9 11 30 8 10 12 30 13 15 25 13 16 25 14
17
✔ ✔ ✔ ✔ ✔ 30 7 9 11 30 8 10 12 30 13 15 25 13 16 25 14
17
✔
✔
✔
✔
✔
✔
44
44
33
44
44
40
38
60
52
52
31
34
38
38
36
38
39
33
37
41
33
41
36 23
36 23
28 15
36 25
36 23
32 19
30 17
52 39
44 27
44 30
28 14
32 21
32 19
32 19
28 17
32 21
✔
✔
✔
✔
✔
✔
21
21
14
21
21
17
19
33
28
28
12
13
19
19
17
19
22
18
20
24
18
24
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
20
20
12
20
20
16
17
30
25
25
10
13
17
17
15
17
20
16
18
22
16
22
300 - 500 mm
26
18
24
26
18
28
18
18
10
18
18
14
15
29
23
23
8
11
15
15
13
15
17
14
15
19
14
19
200 - 250 mm
50 mm
34 23
28 15
32 21
36 23
28 15
36 25
44
44
33
44
44
40
38
60
52
52
31
34
38
38
36
38
42
36
40
44
36
44
200 - 400 mm
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
19
17
17
21
17
21
100 - 150 mm
✔
✔
✔
✔
✔
✔
18
15
16
20
15
20
250 - 350 mm
18
16
13
14
18
13
18
150 - 200 mm
✔ 36 13 15 17 36 14 16 18 33 16 18 28 14 17 28 15
50 - 100 mm
✔ ✔
42
36
40
44
36
44
200 - 250 mm
30
25
HM-Titan
✔ 48 22 24 25 48 23 26 28 45 27 29 40 25 28 40 27
✔ 44 18 20 21 44 19 22 24 41 23 25 36 20 23 36 22
RP Master
✔ ✔
✔ ✔
Master
Vz
RP
Vc Vz Vz Vz Vc Vz Vz Vz Vc Vz Vz Vc Vz Vz Vc Vz
bi-alfa cobalt
200 - 250 mm
1.2365 X 32 CrMoV 3-3
1.2367 X 38 CrMoV 5-3
X 155 CrVMo 121.2379
1
1.2419
105 WCr 6
1.2436 X 210 CrW 12
1.2442
115 W 8
1.2510 100 MnCrW 4
1.2601 X 165 CrMoV 12
1.2606 X 37 CrMoW 5-1
X 45 CoCrWV 51.2678
5-5
1.2713 55 NiCrMoV 6
40 CrMnNiMo 81.2738
6-4
1.2766 35 NiCrMo 16
1.2767 X 45 NiCrMo 4
1.2779 X 6 NiCrTi 26-15
1.2842 90 MnCrV 8
1.3243
S 6-5-2-5
1.3255
S 18-1-2-5
1.3343
S 6-5-2
1.3505
100 Cr 6
1.3536 100 CrMo 7-3
1.3539 100 CrMnMo 8
1.3965 X 8 CrMnNi 18-8
1.4006
X 10 Cr 13
1.4028
X 30 Cr 13
1.4057 X 20 CrNi 17-2
1.4116 X 45 CrMoV 15
1.4301 X 5 CrNi 18-10
X 5 CrNiMo 171.4401
12-2
X 2 VrNiMoN 221.4462
5-3
X 6 CrNiMoTi 171.4571
12-2
1.4742 X 10 CrAl 18
1.4815 GX 8 CrNi 19-10
X 15 CrNiSi 251.4841
20
1.4923 X 22 CrMoV 12-1
Matrix
Material +
DIN Type
27x0,9mm 34x1,1mm 41x1,3mm 54x1,3mm 54x1,6mm
100 - 150 mm
Röntgen
24
24
16
26
24
20
18
40
28
31
16
22
20
20
16
22
300 - 500 mm
200 - 250 mm
200 - 400 mm
100 - 150 mm
250 - 350 mm
150 - 200 mm
50 - 100 mm
200 - 250 mm
100 - 150 mm
50 mm
16
47
30
37
35
38
30
37
34
34
34
34
39
39
24
33
29
29
37
37
38
38
34
37
41
34
45
34
34
34
37
37
34
25
HM-Titan
✔ ✔ ✔ ✔ 30 7 9 11 30 8 10 12 30 13 15 25 12 15 25 13
✔
✔ 63 32 33 36 63 33 35 37 60 36 38 55 42 45 55 44
✔
✔ 52 23 25 26 52 25 27 29 49 31 33 44 25 28 44 27
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 54 25 27 30 54 27 29 31 51 30 32 46 30 33 46 32
✔
✔ 59 30 32 35 59 32 34 36 57 36 38 52 33 36 52 35
✔
✔ 52 23 25 28 52 25 27 29 49 28 30 44 25 28 44 27
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 58 29 31 34 58 31 33 35 55 34 36 50 34 37 50 36
✔
✔ 58 29 31 34 58 31 33 35 55 34 36 50 34 37 50 36
✔
✔ 44 18 20 21 44 19 22 24 41 23 25 36 19 22 36 21
✔
✔ 52 23 25 26 52 25 27 29 49 31 33 44 28 31 44 30
✔
✔ 48 22 24 25 48 23 26 28 45 27 29 40 24 27 40 26
✔
✔ 48 22 24 25 48 23 26 28 45 27 29 40 24 27 40 26
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 58 29 31 34 58 31 33 35 57 36 38 52 33 36 52 35
✔
✔ 60 29 30 36 60 30 32 34 57 36 38 52 33 36 52 35
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 29 32 48 31
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 58 29 31 34 58 31 33 35 55 34 36 52 36 39 52 38
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 29 32 48 31
✔
✔ 63 32 33 36 63 33 35 37 60 36 38 56 40 43 56 42
✔
✔ 56 27 29 32 56 29 31 33 53 32 34 48 29 32 48 31
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 56 27 28 30 56 29 31 33 53 32 34 48 32 35 48 34
✔
✔ 53 24 26 29 53 26 28 30 53 32 34 48 32 35 48 34
✔
✔ 53 24 26 29 53 26 28 30 50 29 31 45 29 32 45 31
✔
✔ 44 18 20 21 44 19 22 24 41 23 25 36 20 23 36 22
RP Master
Vz
Master
Vc Vz Vz Vz Vc Vz Vz Vz Vc Vz Vz Vc Vz Vz Vc Vz
RP
300 - 500 mm
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
27x0,9mm 34x1,1mm 41x1,3mm 54x1,3mm 54x1,6mm
200 - 250 mm
1.4980 X 5 NiCrTi 26-15
1.5415
15 Mo 3
1.5710
36 NiCr 6
1.5752
14 NiCr 14
1.5755
31 NiCr 14
1.5919
15 CrNi 6
1.6310 20 MnMoNi - 5
1.6368 15 NiCuMoNb 5
1.6511 36 CrNiMo 4
1.6522 20 NiCrMo 2
1.6546 40 NiCrMo 2-2
1.6565 40 NiCrMo 6
1.6580 30 CrNiMo 8
1.6582 34 CrNiMo 6
1.6655 32 NiCrMo 12-5
1.6749 23 Cr NiMo 7-4-7
1.6946 30 CrNiMoV 5-11
1.6948 26 NiCrMoV 11-5
1.6981 21 CrMoNiV 4-7
1.6985 28 CrMoNiV 4-9
1.7034
37 Cr 4
1.7147
20 MnCr 5
1.7160 16 MnCrB 5
1.7225
42 CrMo 4
1.7228
50 CrMo 4
1.7273 24 CrMo 10
1.7335 13 CrMo 4-4
1.7707 30 CrMoV 9
1.7735 14 CrMoV 6-9
1.8070 21 CrMoV 5-11
1.8159
50 CrV 4
1.8159
50 CrV 4
1.8515 31 CrMo 12
1.8550 34 CrAlNi 7
bi-alfa cobalt
Material +
DIN Type
Matrix
Röntgen
Table 2: Tooth Pitch selection
For solid material
Regular Tooth Pitch
Material Dimension
Tooth Pitch
bis
10 mm
14 tpi
10 - 30 mm
10 tpi
30 - 50 mm
8 tpi
50 - 80 mm
6 tpi
80 - 120 mm
4 tpi
120 - 200 mm
3 tpi
200 - 400 mm
2 tpi
300 - 700 mm
1,25 tpi
> 600 mm
0,75 tpi
The combi tooth pitch increases
the field of application and
reduces vibration in the cutting
process.
Combi Tooth Pitch
Material Dimension
Tooth Pitch
bis
25 mm
10/14 tpi
15 - 40 mm
8/12 tpi
25 - 50 mm
6/10 tpi
35 - 70 mm
5/8 tpi
40 - 90 mm
5/6 tpi
50 - 120 mm
4/6 tpi *
80 - 180 mm
3/4 tpi *
130 - 350 mm
2/3 tpi
150 - 450 mm
1,5/2 tpi
200 - 600 mm
1,1/1,6 tpi
> 500 mm
0,75/1,25 tpi
For Tubes and Pipes
For thin tubes (up to 8 mm of wall thickness) it is recommended to use a
toothing with 0° tooth rake angle.
Please also refer to our new products bi-alf cobalt profile P and Q!
Tooth pitch recommendation for tubes and pipes
Wall Thickness
S [mm]
2
3
4
5
6
8
10
12
15
20
30
50
80
>100
20
40
14
14
10/14
10/14
10/14
10/14
-
10/14
10/14
10/14
10/14
8/12
8/12
8/12
8/12
8/12
-
Outer Diameter D [mm]
Tooth Pitch Z [tpi]
60
80
100
10/14
10/14
8/12
8/12
8/12
8/12
6/10
6/10
6/10
4/6
-
10/14
8/12
8/12
8/12
6/10
6/10
5/8
4/6
4/6
4/6
4/6
-
10/14
8/12
8/12
6/10
6/10
5/8
4/6
4/6
4/6
4/6
4/6
-
120
150
200
300
500
8/12
8/12
6/10
6/10
5/8
5/8
4/6
4/6
4/6
4/6
4/5
-
8/12
8/12
6/10
5/8
5/8
4/6
4/6
4/6
4/6
4/5
4/5
4/5
-
8/12
6/10
5/8
4/6
4/6
4/6
4/6
4/6
4/5
4/5
4/5
3/4
3/4
-
8/12
6/10
5/8
4/6
4/6
4/6
4/6
4/6
4/5
4/5
4/5
2/3
2/3
2/3
5/8
5/8
4/6
4/6
4/6
4/6
4/5
4/5
4/5
3/4
2/3
2/3
2/3
1,5/2
Table 3: Twisting distance in sawing machines
In order to secure the blade life it is important to maintain a sufficient distance for the
the blade to twist and bend between the guide wheel/driven wheel and the side
guides. The below table has been taken from a recommendation of the North
American Sawing Association. All values in mm!
Please note that the below data is not suitable for high-speed applications such as
cutting of aluminium with band speeds exceeding 1,500 m/min.!
Size / twisting angle
45°
60°
75°
90°
6 x 0,6
160
215
270
325
6 x 0,9
225
300
380
455
10 x 0,6
160
215
270
325
10 x 0,9
225
300
380
455
13 x 0,6
160
215
270
325
13 x 0,9
225
300
380
455
20 x 0,9
225
300
380
455
27 x 0,9
225
300
380
455
34 x 1,1
270
365
455
545
41 x 1,3
325
430
540
650
54 x 1,3
325
430
540
650
54 x 1,6
410
545
680
815
67 x 1,6
410
545
680
815
80 x 1,6
410
545
680
815
Table 4: Contour sawing
The following radii should be considered during contour sawing on vertical machines.
Width of the band
saw blade
Minimum radius
3 mm
4 mm
6 mm
8 mm
10 mm
13 mm
16 mm
20 mm
25 mm
4 mm
8 mm
16 mm
26 mm
40 mm
65 mm
100 mm
140 mm
180 mm